| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef DMA_H |
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| 3 | #define DMA_H |
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| 4 | |
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| 5 | #include <asm/glue-cache.h> |
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| 6 | |
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| 7 | #ifndef MULTI_CACHE |
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| 8 | #define dmac_map_area __glue(_CACHE,_dma_map_area) |
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| 9 | #define dmac_unmap_area __glue(_CACHE,_dma_unmap_area) |
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| 10 | |
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| 11 | /* |
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| 12 | * These are private to the dma-mapping API. Do not use directly. |
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| 13 | * Their sole purpose is to ensure that data held in the cache |
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| 14 | * is visible to DMA, or data written by DMA to system memory is |
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| 15 | * visible to the CPU. |
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| 16 | */ |
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| 17 | extern void dmac_map_area(const void *, size_t, int); |
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| 18 | extern void dmac_unmap_area(const void *, size_t, int); |
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| 19 | |
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| 20 | #else |
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| 21 | |
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| 22 | /* |
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| 23 | * These are private to the dma-mapping API. Do not use directly. |
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| 24 | * Their sole purpose is to ensure that data held in the cache |
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| 25 | * is visible to DMA, or data written by DMA to system memory is |
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| 26 | * visible to the CPU. |
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| 27 | */ |
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| 28 | #define dmac_map_area cpu_cache.dma_map_area |
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| 29 | #define dmac_unmap_area cpu_cache.dma_unmap_area |
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| 30 | |
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| 31 | #endif |
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| 32 | |
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| 33 | #endif |
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| 34 | |
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